APA način citiranja

Gabler, R. E., & Robert E. Gabler. (2007). IE Ess Phys Geo-Physgnow 8e. CA: Cengage Learning, Inc.

Čikaški stil citiranja

Gabler, Robert E., i Robert E. Gabler. IE Ess Phys Geo-Physgnow 8e. CA: Cengage Learning, Inc, 2007.

MLA način citiranja

Gabler, Robert E., i Robert E. Gabler. IE Ess Phys Geo-Physgnow 8e. CA: Cengage Learning, Inc, 2007.